Like for the missionary etc? Got the base game stickers from the files section here on BGG - would love a complete set though.
If not, get cracking artistic types!
Like the ones made by Portal Games?
Robinson Crusoe: Adventure on the Cursed Island – Stickers and Pawns for Sailor and HMS Beagle Characters
edit: I found the file and just submitted it under the Beagle expansion. Should be available soon